Finding the Fourth Proportional to 2,188.86, 3,284.91 and 2,156.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.86 : 3,284.91 = 2,156.46 : x
2. Step 2: Convert to fraction form
   2,188.86/3,284.91 = 2,156.46/x
3. Step 3: Cross multiply
   2,188.86x = 3,284.91 × 2,156.46
4. Step 4: Simplify right side
   2,188.86x = 7,083,777.02
5. Step 5: Solve for x
   x = 7,083,777.02/2,188.86
6. Step 6: Final answer
   x = 3,236.29